onsemi MC74LVX4245DTG, Voltage Level Shifter Translating Transceiver 1, 24-Pin TSSOP

The 74LVX4245 is a 24-pin dual-supply, octal translating transceiver that is designed to interface between a 5V bus and a 3V bus in a mixed 3V/5V supply environment such as laptop computers using a 3.3V CPU and 5V LCD display. The A port interfaces with the 5V bus, the B port interfaces with the 3V bus. The Transmit/Receive (T/Rbar) input determines the direction of data flow. Transmit (active-High) enables data from the A port to the B port. Receive (active-Low) enables data from the B port to the A port. The Output Enable (OEbar) input, when High, disables both A and B ports by placing them in 3-State.

Bi-directional Interface Between 5V and 3V Buses
Control Inputs Compatible with TTL Level
5V Data Flow at A Port and 3V Data Flow at B Port
Outputs Source/Sink 24mA at 5V Bus and 12mA at 3V Bus
Guaranteed Simultaneous Switching Noise Level and Dynamic Threshold Performance
Available in SOIC and TSSOP Packages
Functionally Compatible with the 74 Series 245